What is a therapeutic effect of verapamil?

A. Controlled blood glucose: Verapamil is a calcium channel blocker and does not affect glucose metabolism. It has no role in managing diabetes or controlling blood glucose levels. B. Enhanced cognitive function: Verapamil does not improve cognition or memory. Its pharmacologic action is focused on the cardiovascular system rather than the central nervous system. C. Increased muscle strength: Verapamil does not influence skeletal muscle strength. Its mechanism targets smooth and cardiac muscle by inhibiting calcium influx, primarily affecting vascular tone and heart contractility. D. Decreased blood pressure: Verapamil causes vasodilation by blocking calcium channels in vascular smooth muscle, which reduces systemic vascular resistance and lowers blood pressure. It is used therapeutically to manage hypertension and certain cardiac arrhythmias.